Lighthouse checkpoint sync

lighthouse beacon node --help

      --checkpoint-block <BLOCK_SSZ>
          Set a checkpoint block to start syncing from. Must be aligned and match --checkpoint-state. Using
          --checkpoint-sync-url instead is recommended.
      --checkpoint-state <STATE_SSZ>
          Set a checkpoint state to start syncing from. Must be aligned and match --checkpoint-block. Using
          --checkpoint-sync-url instead is recommended.
      --checkpoint-sync-url <BEACON_NODE>
          Set the remote beacon node HTTP endpoint to use for checkpoint sync.

lighthouse beacon_node, --execution-endpoint, --execution-jwt, --allow-insecure-genesis-sync, logs, --checkpoint-sync-url, --help, checkpoint sync, beacon.log